| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a measuring system capable of improving measurement accuracy by shielding light causing a noise. Ž<P>SOLUTION: In this measuring system having a first magnetic field generation part 301 having a first ridgeline part, a second magnetic field generation part 302 having a second ridgeline part facing to the first ridgeline part at a prescribed clearance, and an optical system (a light source part 100, a collimator lens 201, a filter 202 and a first lens 203) for allowing prescribed light to enter the clearance, an optical axis of the optical system is positioned in a plane vertical to a plane including the first ridgeline part and the second ridgeline part and passing the clearance. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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